The GRACO 255803 is an electronic manual dispense meter designed for accurate measurement and dispensing of anti-freeze. It features a flexible extension and a 1/2" NPT inlet, constructed with durable materials for reliable operation in demanding environments. This meter is intended for use within GRACO fluid dispensing systems, particularly in automotive, fleet, and industrial maintenance applications.

Key Features:

• Electronic manual dispense meter
• SDM5 Series, 1/2" NPT inlet
• Wetted parts: aluminum, stainless steel, PBT/PC, nitrile rubber, carbon steel
• 0.1 to 14 gpm (0.4 to 53 lpm) for SDM5 series (specific to 255803 may be lower; not explicitly specified for this part number, but SDM5 series range is 0.1–14 gpm)
• Maximum working pressure: 1500 psi (103.4 bar) for SDM5 series
• Designed for anti-freeze, but may be used with compatible fluids as per GRACO guidelines
• Flexible extension for ease of use
• Automatic, non-drip, quick-close nozzle
• Electronic totalizer for accurate measurement
• Long battery life (up to one year with alkaline batteries for manual models)
• Lightweight (approx. 5 lbs / 2.3 kg)
• Easy to maintain and replace parts
• Reliable performance in harsh environments

Applications:
Used in automotive dealerships, heavy-duty service centers, fleet maintenance facilities, and industrial lubrication systems for dispensing anti-freeze and compatible fluids.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the dispensing system.
• Ensure proper alignment and secure connection of the 1/2" NPT inlet and flexible extension
• Follow manufacturer’s instructions for wiring and battery installation
• Regularly inspect and maintain wetted parts for wear and contamination
• Use only compatible fluids as specified by GRACO
• Periodically check and replace batteries as needed
• Clean and inspect the nozzle and extension for blockages or leaks
• Calibrate the meter according to the equipment manual for accurate dispensing